Re: Making in subdirectories

[Magnus Fromreide]

On Mon, 19 Feb 2001, Paul D. Smith wrote:

> Something like this:
> 
>   SUBDIRS   = A B
> 
>   prog:
>   prog lib: $(SUBDIRS)
> 
>   $(SUBDIRS):
>           $(MAKE) -C $@ $(MAKECMDGOALS)
> 
>   .PHONY: $(SUBDIRS) prog lib
> 
> Does this not do something you need?

With your makefile:

(the line with a lone prog: is changed to prog: lib, please note that
this doesn't affect the result)

$ gmake
gmake -C A 
gmake[1]: Entering directory `/home/telco/maf/maketest/A'
Making lib in A
gmake[1]: Leaving directory `/home/telco/maf/maketest/A'
gmake -C B 
gmake[1]: Entering directory `/home/telco/maf/maketest/B'
Making lib in B
gmake[1]: Leaving directory `/home/telco/maf/maketest/B'

With my makefile from earlier posting:
$ gmake -f Makefile.mine 
gmake -C A lib
gmake[1]: Entering directory `/home/telco/maf/maketest/A'
Making lib in A
gmake[1]: Leaving directory `/home/telco/maf/maketest/A'
gmake -C B lib
gmake[1]: Entering directory `/home/telco/maf/maketest/B'
Making lib in B
gmake[1]: Leaving directory `/home/telco/maf/maketest/B'
gmake -C A prog
gmake[1]: Entering directory `/home/telco/maf/maketest/A'
Making prog in A
gmake[1]: Leaving directory `/home/telco/maf/maketest/A'
gmake -C B prog
gmake[1]: Entering directory `/home/telco/maf/maketest/B'
Making prog in B
gmake[1]: Leaving directory `/home/telco/maf/maketest/B'

The makefile in A: 

$ cat A/Makefile 
lib prog:
        @echo "Making $@ in A"

In B it looks similar.

What I am trying to express is

In SUBDIRS, do $(MAKE) lib
when finished do
In SUBDIRS, do $(MAKE) prog 

while you are describing

In SUBDIRS, do $(MAKE) $(MAKECMDGOALS)

> You can also make simple prerequisites, like:
> 
>   a: b
> 
> to make sure everything builds in the right order in the face of
> parallel builds.

Yes, in this way I can order the directories but not the targets in the
directories. I do not care about the order of the directories, I only care
about lib being built before prog is built.